E06C 1/12
Extensible
Official title: extensible, e.g. telescopic
E06C1/12 (Extensible) appears on 252 US grants and 275 published applications in this corpus.
Search patents in E06C- Granted patents
- 252
- Published applications
- 275
- Assignees
- 93
- Inventors
- 389
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 1 |
| 2003 | 3 | 2 |
| 2004 | 2 | 8 |
| 2005 | 2 | 2 |
| 2006 | 2 | 6 |
| 2007 | 2 | 10 |
| 2008 | 2 | 4 |
| 2009 | 0 | 5 |
| 2010 | 4 | 11 |
| 2011 | 7 | 11 |
| 2012 | 6 | 8 |
| 2013 | 7 | 3 |
| 2014 | 10 | 9 |
| 2015 | 7 | 17 |
| 2016 | 7 | 14 |
| 2017 | 8 | 10 |
| 2018 | 11 | 22 |
| 2019 | 10 | 25 |
| 2020 | 21 | 19 |
| 2021 | 10 | 18 |
| 2022 | 11 | 18 |
| 2023 | 14 | 14 |
| 2024 | 14 | 16 |
| 2025 | 16 | 12 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ladder stiffener14 Jul 2026US 12,680,382 B2Leverage Design Holding, LLC
- Ladder30 Jun 2026US 12,669,015 B2Ladder Solutions USA Inc.
- Single handrail telescopic ladder21 Apr 2026US 12,607,064 B1
- Ladder mounted securing device for preventing slippage of ladder during use24 Mar 2026US 12,584,354 B2
- Ladders, foot mechanisms for ladders, and related methods17 Feb 2026US 12,553,285 B2Little Giant Ladder Systems, LLC
- Ladder extension assembly20 Aug 2026US 2026/0243131 A1Pure Safety Group, Inc.
- Telescopic structure13 Aug 2026US 2026/0234924 A1
- Smart ladder13 Aug 2026US 2026/0234993 A1Tubemaster, Inc.
- Telescopic ladder30 Jul 2026US 2026/0218569 A1Guangdong Wright Housewares Co.,Ltd.
- Walkthrough and standoff mechanisms for ladders, ladders incorporating same and related methods4 Jun 2026US 2026/0153001 A1Little Giant Ladder Systems, LLC
Most cited
By later US patents
- Combination extension and step ladder rungs therefor65US 4,182,431 ALittle Giant Industries, Inc. · 1980
- Longitudinally variable ladder64US 4,210,224 A1980
- Adjustable extension stepladder58US 5,590,739 A1997
- Method of manufacturing a fiberglass ladder57US 4,371,055 ALittle Giant Industries, Inc. · 1983
- Fiber/resin composite ladder and accompanying accessories51US 5,954,157 AFiberlite Technologies, Inc. · 1999